Frequencies for first 10,000 rows of make variable in person dataset :

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |        134        1.34        1.35
          6 |         72        0.72        2.07
          7 |        486        4.86        6.93
          9 |        200        2.00        8.93
         10 |         16        0.16        9.09
         12 |      1,864       18.64       27.73
         13 |         70        0.70       28.43
         14 |        186        1.86       30.29
         18 |        304        3.04       33.33
         19 |        103        1.03       34.36
         20 |      1,788       17.88       52.24
         21 |        326        3.26       55.50
         22 |        347        3.47       58.97
         23 |        324        3.24       62.21
         24 |         11        0.11       62.32
         29 |          2        0.02       62.34
         30 |         84        0.84       63.18
         32 |         10        0.10       63.28
         34 |         36        0.36       63.64
         35 |        504        5.04       68.68
         36 |          1        0.01       68.69
         37 |        412        4.12       72.81
         38 |         75        0.75       73.56
         39 |          5        0.05       73.61
         41 |        167        1.67       75.28
         42 |         39        0.39       75.67
         44 |          3        0.03       75.70
         45 |          1        0.01       75.71
         47 |          5        0.05       75.76
         48 |         35        0.35       76.11
         49 |        632        6.32       82.43
         50 |          3        0.03       82.46
         51 |         36        0.36       82.82
         52 |         72        0.72       83.54
         53 |         48        0.48       84.02
         54 |         33        0.33       84.35
         55 |         64        0.64       84.99
         56 |          3        0.03       85.02
         57 |          3        0.03       85.05
         58 |          6        0.06       85.11
         59 |         16        0.16       85.27
         60 |          3        0.03       85.30
         61 |          2        0.02       85.32
         63 |          5        0.05       85.37
         69 |          4        0.04       85.41
         72 |         34        0.34       85.75
         73 |         26        0.26       86.01
         74 |          1        0.01       86.02
         75 |          1        0.01       86.03
         76 |         34        0.34       86.37
         82 |        112        1.12       87.49
         84 |        112        1.12       88.61
         85 |         42        0.42       89.03
         86 |         41        0.41       89.44
         87 |         55        0.55       89.99
         89 |         27        0.27       90.26
         98 |         75        0.75       91.01
         99 |        172        1.72       92.73
          . |        727        7.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016